CN100500071C - Suction tool - Google Patents
Suction tool Download PDFInfo
- Publication number
- CN100500071C CN100500071C CNB031566502A CN03156650A CN100500071C CN 100500071 C CN100500071 C CN 100500071C CN B031566502 A CNB031566502 A CN B031566502A CN 03156650 A CN03156650 A CN 03156650A CN 100500071 C CN100500071 C CN 100500071C
- Authority
- CN
- China
- Prior art keywords
- mane
- roller
- suction apparatus
- carpet
- described suction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/02—Nozzles
- A47L9/04—Nozzles with driven brushes or agitators
- A47L9/0405—Driving means for the brushes or agitators
- A47L9/0411—Driving means for the brushes or agitators driven by electric motor
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/02—Nozzles
- A47L9/04—Nozzles with driven brushes or agitators
- A47L9/0427—Gearing or transmission means therefor
- A47L9/0444—Gearing or transmission means therefor for conveying motion by endless flexible members, e.g. belts
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nozzles For Electric Vacuum Cleaners (AREA)
Abstract
The suction apparatus (1) includes a suction channel (4) and an electric motor (6) that drives one or several bristly rollers (16). The rollers are held movably in vertical direction for different effect on a carpet. The effect on the carpet by the roller is carried out dependent on a vacuum detected in the suction channel.
Description
Technical field
The present invention at first relates to a kind of suction apparatus, and the especially annex of electric dust collector or parts preferably are used to maintain the suction-brush utensil of carpet.
Background technology
Suction apparatus, the suction of especially described type-brush utensil be known and be mainly used in suction-brush cleaning carpet, and wherein, suction operation is subjected to the support of the mane roller of Motor Drive rotation, and their mane bundle throws off dust/foul by the mechanism in carpet.Compromise proposal is adopted in the design of the active force of this mane roller.Because wish high dust removal ability on the one hand, and wish on the other hand not act on the carpet with not damaging.Advantageously seek firm as far as possible mane or mane bundle and mane for high dust removal ability big front-extending quantity and high rotating speed are arranged from the utensil bottom surface.Can in carpet, apply big mechanical force by mane in this way.Yet design meanwhile causes carpet to damage negatively like this.In addition, for the carpet of sensitivity.For example velvet carpet also can provide good dust removal ability even apply less mechanical force, and for solid carpet, for example knop cloth then requires to have bigger mechanical force.Some known solutions of head it off are for example stipulated the vertically supporting movingly of mane roller, can change the mane front-extending quantity thus.For example also known, the mane roller is bearing on the movable reel cage (Wippe), and its pile height by carpet is strong deflection more or less.In addition more known schemes, wherein, the mane front-extending quantity can manually be changed by the user.
Summary of the invention
Whether in view of the top prior art that has illustrated, the technical problem to be solved in the present invention is, improves its design for the suction apparatus of described type, to guarantee according to the carpet type that will maintain and to be made dirty easily and be damaged dust suction best.
Above-mentioned technical problem at first and mainly solves by a kind of like this suction apparatus, it is the annex or the parts of an electric dust collector especially, preferably be used to maintain the suction-brush utensil of carpet, it has a suction channel and a motor and one or more electric motor driven thus mane roller, wherein, described mane roller is supported in order to cause different effects on carpet vertically adjustablely He movingly, according to the present invention, the effect of described mane roller in carpet responsible in suction channel detected negative pressure implement.
By design of the present invention, provide a kind of dust suction of the best based on this according to the type that will maintain carpet.Carpet to sensitivity can not be damaged in best dust suction.Otherwise then to dispose for solid carpet, thereby also can reach best dust suction with bigger mechanical force.This aspirator has an active device, and it detects the parameter that exists in the carpet servicing operations, and for example keeps mane to act as a preferred steady state value in carpet by corresponding adjusting rule.By the present invention, the constant parameter of power as keeping applying adopts in suction channel, or in the pump orifice zone detected negative pressure.Therefore can initiatively adjust the effect of mane roller for example by the computing electronics of pressure sensor measuring-signal.It is also contemplated that a kind of scheme, wherein, negative pressure is directly used in for example ACTIVE CONTROL that pneumatically acts on the adjustment part on the mane roller.
In addition, above-mentioned technical problem also can solve by another suction apparatus, it is the annex or the parts of an electric dust collector especially, preferably be used to maintain the suction-brush utensil of carpet, it has a suction channel and a motor and one or more electric motor driven thus mane roller, wherein, the mane roller is supported in order to cause different effects on carpet vertically adjustablely He movingly, and according to the present invention: the motor current of the responsible detected parameter as mane roller rotational resistance of the effect of described mane roller in carpet is implemented.
Here, rotational resistance is main directly relevant with carpet type, therefore can accomplish to make the mane roller that appropriate effect is arranged by the calculating motor electric current.
Above-mentioned two kinds of technical solutions provided by the invention are that the employing separately or the employing that combines all are important.
The feature of the present invention that further specifies below all is the further improvement and/or the expansion design of above-mentioned two kinds of technical solutions.For example stipulate further that this effect can be influenced by the rotating speed that changes the mane roller.In order to change rotating speed, correspondingly control drives the motor of mane roller, for example preferably change the rotating speed of motor by an electron speed regulator of motor, for example can adopt the phase angle control method, a kind of positive width modulated method (Plus-Weiten-Modylation) or other methods that is fit to for this reason.Another kind of substitute mode or with change the rotating speed combination and can stipulate that this effect realizes by changing the mane roller position of protracting vertically.For example, according to rotational resistance and/or the negative pressure measured, change the mane length that the mane roller stretches out from the utensil bottom surface downwards.For this reason, the mane roller can for example be bearing in the vertical channel.But preferred scheme is that the mane roller is fixed on the supporting reel cage, also advises relatively therewith, can influence the position of protracting of mane roller by changing the spring load that vertically acts on the mane roller.For example, can act on initial tension of spring on the mane roller by changes such as servomotors, the rotational resistance and/or the negative pressure that make it and record are complementary.Can take measures to realize the pneumatic scheme of a kind of active on the mane roller, that is, it for example is the air spring of a ripple box that spring is designed in form, and spring performance is by detected negative pressure adjustment in suction channel at that time.Suggestion in addition, this preferably adjustable spring charging device act on the supporting reel cage and for the spring assembly of a balance and the acting in opposition usefulness of getting up.Also have such possibility: the supporting of mane roller can vertically be adjusted, for example by vertically mobile substantially mane roll axis such as servomotors.Can for example the mane roller be fixed on the reel cage that is contained in the suction apparatus in addition, can be by changing spring load or influencing the position of this reel cage by servomotor.Here, the adjustment track of mane roll axis is depicted the line segment of a circle, but it half longly select so greatly so that can reach by meaning of the present invention and vertically to realize the protract change of position of mane.The adjustment vertically of mane roller can be undertaken by actuator, and it for example is designed to the form of the manipulation drift of electromechanical effect.This actuator can be a member that can electronicly stretch out.Also can imagine a member that can pneumaticly stretch out or a bimetal part.In addition, it is also contemplated that piezo-activator or electrochemistry actuator associatedly.Also suggestion, but will the mane roll-in on the carpet rather than the member that active adjustment mane roller is acted in carpet when carpet lifts exert one's influence.Equally, the vertical control of mane roller can for example be applied to, and manually or by an automatic floor covering recognition device mane roller is lifted from the pump orifice zone by the user in hard ground district, makes thicker aspirate also can pass through this zone thus.Another outstanding advantage of the present invention is that the power degree of wear relevant with mane that is applied in the carpet has nothing to do, and guarantees thus can maintain various types of carpets all the time equably during the working lives that the mane roller all allows.Employing has improved dust suction to solid carpet by design of the present invention, meanwhile can not increase the wearing and tearing of carpet when being responsive carpet dust suction.The invention a kind of system, it can be on one's own initiative, that is manually do not influence ground by the user, adjusts the thrust of mane on carpet and thereby adjust the height of mane with respect to the suction apparatus chassis.Therefore for example not all carpet type all need apply identical mechanical force by the mane roller, and wherein, the effect of the mechanical force that is applied is associated with negative pressure in the pump orifice zone and/or with the rotational resistance of mane roller.Automatically carry out by this adjustment of the present invention, so, provide best dust suction situation and the power that on carpet, acts on all the time according to the carpet that will maintain.
Description of drawings
Further specify the present invention by the accompanying drawing of only representing various embodiments below, in the accompanying drawing:
Fig. 1 represent by of the present invention be the bottom view of the suction apparatus of a suction-brush utensil in form;
Fig. 2 represents along the constructed profile of Fig. 1 center line II-II, relates to the first kind of form of implementation that has an adjustable spring;
Fig. 3 represents the corresponding constructed profile with Fig. 2, but relates to the second kind of form of implementation that has an eccentric disc;
Fig. 4 represents to have the third form of implementation of a pneumatic adjustment part;
Fig. 5 represents another kind of pneumatic form of implementation;
Fig. 6 represents that another kind has the form of implementation constructed profile of an actuator; And
Fig. 7 represents the view corresponding with Fig. 6, but relates to the form of implementation that another kind has actuator.
The specific embodiment
At first by Fig. 1 represent with form of description on for suction-brush utensil by electric motor driven suction apparatus 1, shown in this embodiment in it is designed to the annex of dust catcher.This suction-brush utensil 1 is mainly taken over 3 by a shell 2 and and is formed.Extend in the suction chamber 5 from taking over 3 at shell 2 interior suction channels 4 always.Suction chamber is in the distolateral district, and it is back to taking over 3 and almost extend along the whole casing width.
In addition, adorn one and independent be the drive unit of motor 6 in form in shell 2, it rotates the power transmission shaft 8 of extension suction chamber 5 in by odontoid belt 7.Odontoid belt 7 is encapsulated in the belt shell 9, the belt shell can around the axis X gyration be contained in back to the end of power transmission shaft 8.Axis X constitutes simultaneously from motor 6 to odontoid belt 7 power transmission axis and parallel with power transmission shaft 8.
Toothed belt transmission or belt shell 9 extend to axis X from suction chamber 5 center perpendicular to power transmission shaft 8 substantially always.At power transmission shaft 8 residing those ends, in any case in the inside of a mounting portion 10, odontoid belt 7 is engaged on the drive plate 11, the power transmission shaft 8 that is divided into two stretches out from drive plate 11 both sides.Therefore, power transmission shaft 8 extends in the side district of suction chamber 5 from the drive plate 11s respectively always.
In Fig. 1 at the bottom of the utensil of partly cut-away 13, will be, that is taking on the 3 place height that side of suction chamber 5, be contained in the rollers 14 of taking over 3 both sides by two and pass.
This sucking brushing device tool 1 is equipped with mane roller 16 in order to be applied to as the maintenance carpet especially common annex of the electric dust collector used of carpet dust suction.These mane roller 16 usefulness chain-dotted lines are represented in Fig. 1.Each mane roller 16 is designed to hollow body, and the outside is provided with the mane row 18 of two 180 ° of arrangements of staggering, their 180 ° of extending around the mane roller from an end region spirality ground of mane roller 16.
By in the schematic sectional view shown in Figure 2 as can be seen, by the belt shell 9 of mounting portion 10 supporting drive shafts 18, cradle-like is around the supporting of the axis X of motor 6.Should select orientation so here, that is, the mane that makes mane row 18 13 stretches out from the bottom downwards by the suction accent 19 that suction chamber 18 is located in the bottom 13, and thus, when 16 rotations of mane roller, the mane roller mechanically inserts in the carpet 20 that will clean.
In addition, be provided with a measurement mechanism that schematically illustrates 21, detect the rotational resistance of mane roller 16 by it, it is determined by calculating the motor current that consumes, and motor current depends on the type of the carpet 20 that will maintain.Power by mane roller 16 applies in carpet 20 remains a steady state value by regulating rule.This for example can realize that this rotating speed change here preferably reaches by phase angle control by the rotating speed that changes motor 6.
As shown in Figure 2, have this possibility: be parallel to reel cage axis or motor axis X orientation mane roll axis Y can (arrow a) changes along the direction of perpendicular.For this reason, press the form of implementation of Fig. 2, for example pass through to change the spring preload, the spring force of the compression spring 22 of corrective action on the belt shell 9 of cradle-like supporting by adjustment part 23.Therefore, the power that mane roller 16 is applied in the carpet 20 is complementary with the type of carpet 20, reaches in this case for solid carpet and improves dust suction, and do not increase carpet for the carpet of sensitivity and wear and tear.
By changing adjustable spring load, mane front-extending quantity b can adapt with the requirement that keeps applied force constant.
Fig. 3 has represented another kind of scheme.By this scheme, by the servomotor of not representing in measurement mechanism 21 control charts, by the rotatable eccentric disc 24 that acts on the cradle-like belt shell 9 of servomotor.Thus also can be by vertically (arrow a) changes mane roll axis Y and changes the front-extending quantity b that adjusts mane.
Another kind of possibility is, according to the value of determining measurement mechanism 21 in the position of protracting of rotating speed adjustment and change mane roller 16 combined and carries out.
Fig. 4 has represented another kind of form of implementation, and wherein, employing detected negative pressure conduct in suction chamber 5 is used for the initiatively parameter of adjustment.For this reason, establish one is the air spring 30 of the generation power of a pneumatic ripple box in form, and it influences the upright position of mane roller 16 according to the negative pressure that exists in suction chamber 5.When carpet is sucked in the pump orifice of suction chamber 5 by the part and this moment mane than in the deeper insertion carpet pile of nondestructively disposing carpet and being allowed the time, detect a bigger negative pressure.Correspondingly implement the appropriate lifting of mane roller 16 by air spring adjustment part 30.For the too small situation of negative pressure in suction chamber 5, being inserted through sinking mane roller 16 of mane and increasing.Press the form of implementation of Fig. 4, Pneumatic assembly (air spring 30) is located in the district that is under the environmental pressure, and wherein, the inner chamber of air spring 30 is connected with the suction chamber 5 that is in negative pressure state by pipeline 31.One end bearing of air spring 30 is at the downside of casing cover, and another free and bearing is at the upside of the belt shell 9 of cradle-like supporting.
Along with the increase of negative pressure, the ripple box of air spring 30 shrinks and also to tend to impel mane roller 16 to promote, to this for balance can be provided with another act on the supporting reel cage and with the figure of the spring load acting in opposition of air spring 30 in the spring of expression not.Otherwise along with negative pressure descends, the ripple box of air spring 30 moves down mane roller 16 when adjusting downwards.
By the area and the material of air spring 30 ripple boxes, can adjust the control characteristic and the power of this pneumatic members.
Fig. 5 represents to have the another kind of embodiment of a pneumatic adjustment part, and here, air spring 30 is located in the negative pressure cavity, that is in suction chamber 5, and the inside of the box-like air spring 30 of ripple is communicated with environmental pressure by pipeline 31.This air spring 30 is located at the downside of cradle-like belt shell 9 and tends to upwards presses mane roller 16 by this belt shell 9.
Establish in the scheme of Fig. 6 and 7 expressions and adjust the actuator 32 that mane roller upright position is used.These actuators 32 can be from hardware, piezo-activator, motor, electrochemistry actuator etc., wherein, actuator 32 both can by Fig. 6 be arranged in belt 9 above, also can be arranged in the downside of belt shell 9 as shown in Figure 7.These actuators preferably also can with figure in show not the spring mating reaction of the acting in opposition of expression.
The control of actuator 32 is by calculating motor current that consumes and/or the negative pressure realization that records by calculating, and wherein, negative pressure is determined by the pressure sensors 33 that are located in the suction chamber 5 that is under the negative pressure.
By the master cock 34 (automatic button) of an outside, mane roller 16 for example further can be promoted from ground wittingly, and guarantee hard place operation or activation automatic adjustment system thus.Spring or be similar to the material of spring can be supported or suppress the effect of actuator or prevent its damage.
Enumerate other adjusting action below according to detected motor current and/or negative pressure enforcement as example.If not only have big negative pressure but also have a big motor current, then mean it is a kind of high pile and/or dense carpet here.This causes promoting mane roller 16 automatically, damages carpet and reduces tractional force and electric motor overheating so that avoid thus.If not only negative pressure but also motor current all have only lower value, then the deciphering of this signal is to have hard ground.Mane roller 16 is raised, and at this moment, lifting only proceeds to till the threshold value that reaches a motor current.Therefore when the floor covering conversion, can determine whether mane roller 16 is on the carpet now.By promoting mane roller 16, reduce the damage on hard ground and be easy to aspirate thick thing.If negative pressure and motor current are medium, then carpet needs bigger volume flow and/or bigger mechanical force, and mane roller 16 descends for this reason.So have bigger mechanical force to be applied in the carpet, guarantee to provide bigger dust removal ability thus.
If negative pressure is little and meanwhile motor current is big, carpet needs bigger volume flow, yet mane roller 16 can insert in the carpet pile too far.For avoiding damaging carpet and reduce tractional force and electric motor overheating simultaneously, mane roller 16 suitably promotes.There is a kind of dense carpet in the big and motor current hour when negative pressure, and mane roller 16 inserts its mane in the carpet pile very fewly at this moment.Mane roller 16 is lowered by, and keeps inhaling brushing effects thus.
The above-mentioned control action of implementing according to input signal is only as example.Certainly also need some control threshold values for this reason, but not explanation here.
All disclosed features () own all belong to important content of the present invention.The disclosed content of the application also comprises the disclosed full content of its priority text (application text formerly) comprehensively, and for this purpose, has absorbed the feature in these priority texts in the application's claim.
Claims (17)
1. a suction apparatus (1), it is the annex or the parts of an electric dust collector, be used to maintain carpet (20), it has a suction channel (4) and a motor (6) and one or more electric motor driven thus mane rollers (16), wherein, mane roller (16) on carpet (20), cause different effects vertically (a) be supported adjustablely He movingly, it is characterized by: the motor current of the responsible detected parameter as mane roller (16) rotational resistance of the effect of mane roller (16) in carpet (20) is implemented.
2. according to the described suction apparatus of claim 1, it is characterized by: the effect of described mane roller (16) in carpet (20) can be affected by the rotating speed that changes mane roller (16).
3. according to the described suction apparatus of claim 2, it is characterized by: the change of described mane roller (16) rotating speed realizes by an electron speed regulator of motor (6).
4. according to the described suction apparatus of claim 1, it is characterized by: the effect of described mane roller (16) in carpet (20) can realize by the position that change mane roller (16) protracts.
5. according to the described suction apparatus of claim 4, it is characterized by: described mane roller (16) is bearing in the vertical channel.
6. according to the described suction apparatus of claim 4, it is characterized by: described mane roller (16) is fixed on the supporting reel cage.
7. according to the described suction apparatus of claim 4, it is characterized by: the position of protracting of described mane roller (16) can be affected by the spring charging device that change mane roller (16) vertically acts on.
8. according to the described suction apparatus of claim 7, it is characterized by: described spring charging device is designed to air spring (30), and its spring performance is adjusted by detected negative pressure in suction channel (4).
9. according to the described suction apparatus of claim 7, it is characterized by: described spring charging device act on the supporting reel cage and with the spring assembly of an acting in opposition.
10. according to the described suction apparatus of claim 4, it is characterized by: the supporting of described mane roller (16) can vertically be adjusted.
11. according to the described suction apparatus of claim 10, it is characterized by: described adjustment realizes by an actuator (32).
12. according to the described suction apparatus of claim 11, it is characterized by: described actuator (32) is a manipulation drift.
13. according to the described suction apparatus of claim 11, it is characterized by: described actuator (32) is a member that can electronicly stretch out.
14. according to the described suction apparatus of claim 11, it is characterized by: described actuator (32) is a member that can pneumaticly stretch out.
15. according to the described suction apparatus of claim 11, it is characterized by: described actuator (32) is a bimetal part.
16. according to the described suction apparatus of claim 11, it is characterized by: described actuator (32) is a piezo-activator.
17. according to the described suction apparatus of claim 11, it is characterized by: described actuator (32) is an electrochemistry actuator.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE20213835.6 | 2002-09-07 | ||
| DE20213835 | 2002-09-07 | ||
| DE20313354U DE20313354U1 (en) | 2002-09-07 | 2003-08-27 | Suction apparatus especially attachment for vacuum-cleaner has suction channel and bristly rollers that have different effects on carpet depending on vacuum detected in suction channel |
| DE20313354.4 | 2003-08-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1493245A CN1493245A (en) | 2004-05-05 |
| CN100500071C true CN100500071C (en) | 2009-06-17 |
Family
ID=31716749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031566502A Expired - Fee Related CN100500071C (en) | 2002-09-07 | 2003-09-08 | Suction tool |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1396222B1 (en) |
| CN (1) | CN100500071C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108618703A (en) * | 2017-03-24 | 2018-10-09 | 沃维克股份有限公司 | For the clean attachment of carpet |
| CN109381115A (en) * | 2017-08-11 | 2019-02-26 | 德国福维克控股公司 | The ground processing equipment of floor treatment element with electrical motor driven |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2422090B (en) | 2005-01-12 | 2008-07-02 | Techtronic Ind Co Ltd | Head for a suction cleaner |
| DE102010000573B4 (en) | 2010-02-26 | 2022-06-23 | Vorwerk & Co. Interholding Gmbh | Method of controlling the power of a suction/sweeping device |
| KR101287028B1 (en) * | 2011-03-04 | 2013-07-17 | 한경희 | carpet cleaner |
| US9345371B2 (en) | 2012-12-12 | 2016-05-24 | Electrolux Home Care Products, Inc. | Vacuum cleaner base assembly |
| US20140157543A1 (en) | 2012-12-12 | 2014-06-12 | Electrolux Home Care Products, Inc. | Vacuum cleaner base assembly |
| DE102015100483B4 (en) * | 2015-01-14 | 2024-04-18 | Vorwerk & Co. Interholding Gmbh | Suction unit for a vacuum cleaner |
| DE102016101040A1 (en) * | 2016-01-21 | 2017-07-27 | Vorwerk & Co. Interholding Gmbh | Suction nozzle for a vacuum cleaning device |
| WO2019143700A1 (en) | 2018-01-17 | 2019-07-25 | Tti (Macao Commercial Offshore) Limited | System and method for operating a cleaning system based on a surface to be cleaned |
| DE102018116547B4 (en) * | 2018-07-09 | 2020-08-20 | Vorwerk & Co. Interholding Gmbh | Suction nozzle for a vacuum cleaner for cleaning a carpet and vacuum cleaner with such a suction nozzle |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4910824A (en) * | 1987-11-17 | 1990-03-27 | Amano Corporation | Floor polisher |
| US5056175A (en) * | 1989-04-24 | 1991-10-15 | Stein & Co. Gmbh | Floor cleaning machine |
| US6123779A (en) * | 1999-06-01 | 2000-09-26 | Fantom Technologies Inc. | Pressure based sensing means for adjusting the height of an agitator in a vacuum cleaner head |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4679271A (en) | 1986-03-14 | 1987-07-14 | Tennant Company | Automatic tool force compensator for a surface maintenance machine |
-
2003
- 2003-09-04 EP EP20030020058 patent/EP1396222B1/en not_active Expired - Lifetime
- 2003-09-08 CN CNB031566502A patent/CN100500071C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4910824A (en) * | 1987-11-17 | 1990-03-27 | Amano Corporation | Floor polisher |
| US5056175A (en) * | 1989-04-24 | 1991-10-15 | Stein & Co. Gmbh | Floor cleaning machine |
| US6123779A (en) * | 1999-06-01 | 2000-09-26 | Fantom Technologies Inc. | Pressure based sensing means for adjusting the height of an agitator in a vacuum cleaner head |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108618703A (en) * | 2017-03-24 | 2018-10-09 | 沃维克股份有限公司 | For the clean attachment of carpet |
| CN109381115A (en) * | 2017-08-11 | 2019-02-26 | 德国福维克控股公司 | The ground processing equipment of floor treatment element with electrical motor driven |
| CN109381115B (en) * | 2017-08-11 | 2022-02-01 | 德国福维克控股公司 | Floor treatment device with an electric motor-driven floor treatment element |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1396222B1 (en) | 2010-04-14 |
| EP1396222A3 (en) | 2005-03-23 |
| CN1493245A (en) | 2004-05-05 |
| EP1396222A2 (en) | 2004-03-10 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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